石骨症 (ｏｓｔｅｏｓｅｌｅｒｏｓｉｓ)是一种原因未明的先天性骨发育障碍性疾病。临床较少见 ,现将我院两例报告如下。例 1 ,男 ,30天 ,因“发现皮肤出血点四天 ,鼻衄两小时”入院。查体全身皮肤见多数针尖大小广泛出血点 ,无瘀点瘀斑 ,肝肋下2ｃｍ ,脾未及 ,实验室检查Ｈｂ Osteoarthritis is a congenital bone developmental disorder of unknown etiology. Clinical less common, now my hospital reported two cases are as follows. Example 1, male, 30 days, due to “find the skin bleeding for four days, epistaxis two hours” admission. Examination of the body most of the skin to see the size of the majority of the tip size of bleeding, petechiae petechiae, liver ribs 2cm, spleen and laboratory tests Hb